Tripod



(No Model.)

J. L. BROWN.

TRIPOD. Y

Patented Dec. 1891.-

amve'n'f-oz Julius LBr'uWn.

311 mm lllm UNITED STATES PATENT OFFICE.

JULIUS L. BROWN, OF ATLANTA, GEORGIA.

TRIPOD.

SPECIFICATION forming part of Letters Patent No. 464,471, dated December1, 1891.

Application filed May 7,1391. Serial No. 391,982- (No model.)

To all whom it may concern:

Be it known that I, J ULIUs L. BROWN, of Atlanta,in the county of Fultonand State of Georgia, have invented certain new and usef ul Improvementsin Tripods; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

The object of this invention is to improve the construction of tripodsto make them more convenient for transportation and for adjustment andmore rigid when in use.

The invention consists of several of the features of the device, thatwill be hereinafter described, and that are shown in the accompanyingdrawings, in which- Figurel is a side elevation showing the connectionof the legs with the disk that forms the support for the theodolite orcamera and the means by which the hinges of legs are made rigid. Fig. 2shows a perspective View of the device. Fig. 3 shows the construction ofthe legs.

111 the several figures the different parts of the device are uniformlymarked by referencecharacters.

On the under side of the disk A are the downwardly projecting lugs. a,preferably three in number. The legs B are hinged to the lugs a by thepins p passing through the forked ends of the hinge-pieces O and saidlugs, which forms a hinge-joint. The bottoms of the lugs a aresemicircular, the axes being the pivoting-pins p. The legs B arecomposed of sections b, one end of each section being'provided with athreaded hole and the other with a threaded pin, as shown in Fig. 3.These sections 1) may be made of a uniform or of a varying diameter, andif of a varying diameter each section, commencing at the top, may be ofa uniformly smaller diameter of a tapering form, and the larger or topend of each should be of the same size as the smaller or bottom end ofthe one that it follows. These legs may be made hollow or solid or ofany available material according to the requirements.

The hinge pieces 0 have tapped holes through them, as shown in Fig. 1,that are in line with the lugs a and lugs 13 of the top sections b ofthe legs which screw into said holes, the screws on. the legs being longenough to abut against the circular faces of the lugs a, thus preventingthe movement of the legs, and it is preferable that all of the screws onthe several sections should be of uniform length and size.

The legs on being detached from the hingepieces may be subdivided intoshort sections for convenient transportation, and when in use the tripodmay be adjusted as to height by using more or less of the section b, asrequired. The height and position being adjusted, the whole structuremay bemade rigid by the screwing of the top sections against the lugs a.Flat faces I) for a wrench should be on the top pieces and may be onall.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is

In a device of the class specified, the center plate A, having lugs aand the swivel O pi voted thereon, having a screw-threaded hole radiallytherein, and a leg B, having a screwthreaded portion adapted to bescrewed into and throughvsaid radial hole in said swivel and be forcedagainst the circular portion of said lug, substantially as and for thepurpose specified.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

JULIUS L. BROl/VN.

Witnesses:

A. P. W001), EDWARD P. \VOOD.

